Clutch Pedal Position Switch

Clutch Pedal Position (CPP) switch is mounted near clutch pedal. CPP switch is an input for Powertrain Control Module (PCM) indicating clutch pedal position and, in some manual transmission applications, both clutch pedal position and gearshift position. PCM provides a 5-volt reference (VREF) signal to CPP and/or Park/Neutral Position (PNP) switch (on CPP signal circuit). If CPP switch is closed (indicating clutch pedal applied) and shift lever is in Neutral position, output voltage from PCM is grounded through signal return circuit to PCM and one volt or less will be present. If CPP switch (or PNP switch, or both CPP and PNP switches) is open, meaning clutch pedal is released (all systems), or shift lever is not in Neutral position (PNP switch systems), CPP input signal to PCM will be about 5 volts, indicating a load on engine. PCM uses load information for mass airflow and fuel calculations.